This page demonstrates how to set the collision behavior for a marker.
Collision behavior controls how a marker will display if it collides (overlaps)
with another marker.
To set collision behavior, set collisionBehavior to one of the following:
REQUIRED: Always display the marker regardless of collision
REQUIRED_AND_HIDES_OPTIONAL: Always display the marker regardless of
collision, and hide any OPTIONAL_AND_HIDES_LOWER_PRIORITY markers or
labels that would overlap with the marker.
OPTIONAL_AND_HIDES_LOWER_PRIORITY: Display the marker only if it does not
overlap with other markers. If two markers of this type would overlap, the
one with the higher zIndex is shown. If they have the same zIndex, the
one with the lower vertical screen position is shown.
The following example shows setting collision behavior for a marker:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-20 UTC."],[],[],null,["Select platform: [Android](/maps/documentation/maps-3d/android-sdk/configure-marker-collision-behavior \"View this page for the Android platform docs.\") [iOS](/maps/documentation/maps-3d/ios-sdk/configure-marker-collision-behavior \"View this page for the iOS platform docs.\") [JavaScript](/maps/documentation/javascript/3d/marker-collision \"View this page for the JavaScript platform docs.\")\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| This product or feature is in Preview (pre-GA). Pre-GA products and features might have limited support, and changes to pre-GA products and features might not be compatible with other pre-GA versions. Pre-GA Offerings are covered by the [Google\n| Maps Platform Service Specific Terms](https://cloud.google.com/maps-platform/terms/maps-service-terms). For more information, see the [launch stage\n| descriptions](/maps/launch-stages).\n\n\u003cbr /\u003e\n\n\nThis page demonstrates how to set the collision behavior for a marker.\nCollision behavior controls how a marker will display if it collides (overlaps)\nwith another marker.\n\nTo set collision behavior, set `collisionBehavior` to one of the following:\n\n- `REQUIRED`: Always display the marker regardless of collision\n- `REQUIRED_AND_HIDES_OPTIONAL`: Always display the marker regardless of collision, and hide any `OPTIONAL_AND_HIDES_LOWER_PRIORITY` markers or labels that would overlap with the marker.\n- `OPTIONAL_AND_HIDES_LOWER_PRIORITY`: Display the marker only if it does not overlap with other markers. If two markers of this type would overlap, the one with the higher `zIndex` is shown. If they have the same `zIndex`, the one with the lower vertical screen position is shown.\n\nThe following example shows setting collision behavior for a marker: \n\n const marker = new Marker3DElement({\n position: {lat, lng},\n collisionBehavior: google.maps.CollisionBehavior.REQUIRED\n });"]]